package com.example.mobile2030606148tdh0604;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;

public class MyDataAdaoter {
    private MySQLiteOpenHelper openHelper=null;
    private SQLiteDatabase database;
    public void openDB(Context context){
        openHelper=new MySQLiteOpenHelper(context,"Student.db",null,1);
        try {
            database=openHelper.getWritableDatabase();
        }catch (Exception e){
            database=openHelper.getReadableDatabase();
        }
    }
    public void closeDB(){
        if (database!=null){
            database.close();
            database=null;
        }
        if (openHelper!=null){
            openHelper.close();
            openHelper=null;
        }
    }
    public boolean isOpen(){
        if (database!=null){
            return  database.isOpen();
        }else{
            return  false;
        }
    }
    public boolean isReadOnly(){
        if (database!=null){
            return database.isReadOnly();
        }else{
            return false;
        }
    }
    public int getVersion(){
        if (database!=null){
            return database.getVersion();
        }else {
            return -1;
        }
    }
    public String getPath(){
        if (database!=null){
            return database.getPath();
        }else{
            return "空";
        }
    }
}
